US4967219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera with zoom lens
Assignee: Pentax Corp
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Filing: 1989-10-04
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Granted: 1990-10-30
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Expires: 2009-10-04
Abstract
Abstract A zoom lens camera in which a zoom-photographing optical system is disposed separately from a finder optical unit, the zoom-photographing optical system being zoomed by rotating a cam ring about its optical axis as a rotational center. The cam ring is provided on a forward portion thereof with a cut-way portion extending in its peripheral direction, a forward portion of the finder optical unit being located in the cut-away portion.
Inventors
- 👤 Tahei Morisawa
- 👤 Makoto Mogamiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
G; G03; G03B; G03B3/00; G03B13/00; G03B13/02; G03B13/06; G03B13/10; G03B13/12; G03B3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A zoom lens camera comprising a zoom-photographing optical system; and a finder optical unit disposed separately from said zoom-photographing optical system; wherein movement of said zoom-photographing optical system for zooming is effected by rotating a cam ring about the optical axis as a rotational center; and a cut-away portion formed in a peripheral surface on a forward portion of said cam ring, a forward portion of said finder optical unit being located in the cut-away portion.
Claim 2
Dependent Claim
76 words
A zoom lens camera comprising a zoom-photographing optical system; and a finder optical unit disposed separately from said zoom-photographing optical system; wherein movement of said zoom-photographing optical system for zooming is effected by rotating a cam ring about the optical axis as a rotational center; and a cut-away portion formed in a peripheral surface on a forward portion of said cam ring, a forward portion of said finder optical unit being located in the cut-away portion.
Claim 3
Dependent Claim
19 words
A zoom lens camera according to claim 1, wherein said finder optical unit is a zoom finder optical unit.
Claim 4
Dependent Claim
73 words
A zoom lens camera according to claim 2, wherein an optical path of said zoom finder optical unit comprises a forward optical path parallel to the photographing optical system and near an optical axis of said photographing optical system, a rearward optical path further away from the optical axis of said photographing system than the forward optical path, and a deflected optical path connecting the forward optical path to the rearward optical path.
Claim 5
Dependent Claim
52 words
A zoom lens camera according to claim 3, wherein the camera is an electronic still camera; and the deflected optical path of said finder optical unit is disposed forward of a photographing element board with a photographing element mounted thereon, which is located at a position rearwardly said zoom photographing optical system.
Claim 6
Dependent Claim
46 words
A zoom lens camera according to claim 1, wherein said cam ring is in the form of a ring as a whole so as to be zoomed by rotation and said cam ring is provided at a portion of its forward portion with a cut-away portion.
Claim 7
Dependent Claim
58 words
A zoom lens camera according to claim 5, wherein said cam ring in the form of a ring as a whole is provided with at least two cam grooves and with said cut-away portion at a forward portion thereof; and said cam ring is further provided at its outer periphery with a gear extending in a peripheral direction.
Claim 8
Dependent Claim
24 words
A zoom lens camera as claimed in claim 6, wherein said gear is adjustly positioned in a peripheral direction relative to the cam ring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-29 | 1994-04-30 | 1994-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-29 | 1998-04-30 | 1998-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-29 | 2002-04-30 | 2002-10-30 | $7700.00 | Window Closed / Lapsed |